Methods and systems for vertical trajectory determination
US10222213B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2015 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Oct 1, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This disclosure provides a vertical position and velocity determination system for inertial measurement unit (IMU) integrated with a barometric altimeter in the same device (IMU-baro). The system includes a rate of turn input connected to receive a measured IMU-baro rate of turn; an acceleration input connected to receive a measured IMU-baro acceleration; a barometric pressure input connected to receive a measured IMU-baro altitude; a first Kalman filter connected to the rate of turn input and to the acceleration input to estimate a roll and pitch of the IMU-baro based on the measured IMU-baro rate of turn and the measured IMU-baro acceleration; and a second Kalman filter connected to the acceleration input, to the barometric pressure input, and to the first Kalman filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.